Lista słów polskich - pochodzenie i licencja
Polish word list - origin and licence
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Source:    SJP.PL spelling dictionary for Hunspell/MySpell (pl_PL), https://sjp.pl/sl/ort/
           file https://sjp.pl/sl/ort/sjp-myspell-pl-20260901.zip
             SHA-256 47a5ab02cf3def374994b1b03efd9fed2de868349b8ddcebac281b484353d157
           containing pl_PL.zip -> pl_PL.dic (ISO-8859-2)
             SHA-256 8dce9daca500da62af829958206e7a50ecd96827ca52a1582b5d79c4a0d3600d
           and pl_PL.aff
             SHA-256 82973651651aa930335c865b339b98db376ca3dbf3a661b70b9eeb71fdf41dca
           original notice: README_pl_PL-original.txt (version generated 2026-09-01)
Retrieved: 2026-09-28
Licence:   "licensed under GPL 2, LGPL 2.1, MPL (Mozilla Public License) 1.1, Apache 2.0 and
           Creative Commons Attribution 4.0 International" (README_pl_PL.txt; licence of your choice,
           sjp.pl/sl/ort: "Udostępniane na licencjach (do wyboru)"). Used here under Apache-2.0
           (LICENSE-Apache-2.0.txt), which is compatible with GPLv3.

Processing (scripts/build-wordlist.mjs, function plFormen, run: node scripts/build-wordlist.mjs pl):
- every entry of pl_PL.dic plus all suffix forms from pl_PL.aff (SFX rules: declension, conjugation,
  comparison); the prefix rule "nie-" (PFX b) is not applied
- lower-case words only (a-z and ą ć ę ł ń ó ś ź ż): proper names, abbreviations in capitals and
  multi-word entries are dropped; 2-20 letters, at least one vowel
- a few slurs removed together with all their forms (PL_RAUS, hand-checked)
- only forms that occur in wordfreq (pl) with Zipf >= 1.3 (PL_MIN_FINDER; see README_wordfreq.txt):
  all attested forms (307,000) would make 9.txt/10.txt about 480 KB, the target is <= 400 KB per file
Result:    244,000 word forms in <length>.txt (largest file 9.txt, ~380 KB).
Wordle:    wordle.txt = forms with exactly 5 letters of the Polish alphabet (without q, v, x;
           ą ć ę ł ń ó ś ź ż are letters of their own, as in the Polish Wordle "Literalnie")
           and wordfreq Zipf >= 3 -> 3,945 words.

Licence of the lists in this folder (<length>.txt, wordle.txt): GPL-3.0-or-later
(COPYING-GPL-3.0.txt), because they combine SJP.PL (Apache-2.0) with wordfreq data (CC BY-SA 4.0).